The invention relates to organic photochromic materials consisting of a polymer matrix of optical quality and of at least one dye that imparts photochromic properties to the matrix, the dye being selected from spirooxazines, spiropyrans and chromenes.

Nicholas Spiro is Managing Director of Spiro Sovereign Strategy

The coloring agent is chosen from the group of the spirooxazins, the spiropyrans, and the chromenes.

Nicholas Spiro, Managing Director of Spiro Sovereign Strategy

Nicholas Spiro is managing director of Spiro Sovereign Strategy

Nicholas Spiro, Managing Director of Spiro Sovereign Strategy

  Specifically disclosed is a spiro compound represented by general formula (1), a salt of the spiro compound, or a solvate of the spiro compound or the salt.

(1) According to the number of spiro atoms, the spiro compound can be classified into a single spiro compound, a dispiro, a triple spiro, and a multi-spiral compound containing a plurality of spiro atoms.

Additional Information for Identifying Spiro[5.5]undecane Molecule

Selecting the Spiro tool puts you into Spiro drawing mode.

The next chapter, “Drawing with Spiro”, describes the Spiro drawing mode.

The remaining two can mutually bond and form a spiro ring having a nitrogen atom as the spiro atom therefor.

The spiro quaternary amine is also useful as an antimicrobial agent.

Another death related to Spiro and his activities was Howard Cerney, a lawyer from New York City, who represented Ian Spiro on some of Spiro’s legal matters.

Provided are a spiro-carbazole compound comprising a spiro skeleton, and an organic electronic element using the same and a terminal thereof.